G6PD Deficiency
What is G6PD deficiency?
G6PD deficiency is a genetic condition where your body does not make enough glucose-6-phosphate dehydrogenase. This enzyme protects red blood cells from damage caused by oxidative stress. When you have this deficiency, certain triggers can cause your red blood cells to break down too quickly.
This process is called hemolysis. It happens when you encounter specific foods, medications, infections, or other stressors. Most people with G6PD deficiency live normal lives between episodes. The key is knowing your triggers and avoiding them.
G6PD deficiency is one of the most common enzyme disorders worldwide. It affects more than 400 million people globally. The condition is inherited and passed down through families on the X chromosome. Men are more likely to have symptoms than women.
Symptoms
- Pale or yellowish skin and eyes, also called jaundice
- Dark tea-colored or cola-colored urine
- Extreme tiredness and weakness
- Rapid heartbeat or shortness of breath
- Back pain or abdominal pain
- Fever during a hemolytic crisis
- Enlarged spleen in severe cases
Many people with G6PD deficiency have no symptoms most of the time. Symptoms typically appear only during a hemolytic crisis when red blood cells break down rapidly. Between episodes, you may feel completely normal and healthy.
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Causes and risk factors
G6PD deficiency is caused by mutations in the G6PD gene located on the X chromosome. You inherit this gene from your parents. Because the gene sits on the X chromosome, males need only one copy of the mutated gene to have symptoms. Females need two copies, which makes severe symptoms less common in women.
Hemolytic crises are triggered by oxidative stress that damages red blood cells. Common triggers include fava beans, certain medications like antimalarials and sulfa drugs, infections like pneumonia or hepatitis, and diabetic ketoacidosis. Some people experience crises after exposure to mothballs containing naphthalene. Knowing and avoiding your specific triggers helps prevent episodes and keeps you healthy between crises.
How it's diagnosed
G6PD deficiency is diagnosed through a specific enzyme activity test that measures G6PD levels in your blood. This specialized test shows whether you have enough enzyme to protect your red blood cells. Doctors often order this test if you have unexplained hemolysis or a family history of the condition.
During and after a hemolytic crisis, monitoring your red blood cell count is essential. Rite Aid offers testing that includes RBC count monitoring to track your red blood cell levels during recovery. Regular blood testing helps you and your doctor understand how well your body is responding to treatment and whether your blood counts are returning to normal.
Treatment options
- Avoid known triggers including fava beans, certain medications, and mothballs
- Treat infections promptly to reduce oxidative stress on red blood cells
- Stay hydrated, especially during illness or physical stress
- Work with your doctor to review all medications before taking them
- Monitor red blood cell counts during and after hemolytic episodes
- Get blood transfusions in severe cases when anemia becomes dangerous
- Wear a medical alert bracelet to inform healthcare providers of your condition
- Educate family members about trigger avoidance and symptom recognition
Concerned about G6PD deficiency? Get tested at Rite Aid.
- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Fava beans are the most important food to avoid with G6PD deficiency. They can trigger severe hemolysis in susceptible individuals. Some people also react to bitter melon, red wine, and blueberries. Keep a food diary to identify any personal triggers and discuss concerns with your doctor.
There is no cure for G6PD deficiency because it is a genetic condition. Treatment focuses on avoiding triggers and managing hemolytic episodes when they occur. Most people with G6PD deficiency live full, normal lives by knowing their triggers and taking preventive measures.
Common medications to avoid include antimalarials like primaquine, sulfa antibiotics, aspirin in high doses, and certain pain medications. Always tell your doctor and pharmacist about your G6PD deficiency before starting any new medication. They can check whether a drug is safe for you or suggest alternatives.
Between episodes, you may not need frequent testing if you feel well. During or after a hemolytic crisis, your doctor will monitor your red blood cell count closely to track recovery. Regular testing every 6 to 12 months can help establish your baseline blood counts and catch any changes early.
Yes, G6PD deficiency is most common in people of African, Mediterranean, Middle Eastern, and Southeast Asian descent. The genetic mutation likely provided protection against malaria in these regions. If you have ancestry from these areas, genetic screening may be recommended.
Women can have symptoms, but they are usually milder than in men. Because women have two X chromosomes, one normal copy can often compensate for the defective gene. Some women who carry one copy may experience mild symptoms during severe stress or illness.
During a hemolytic crisis, your red blood cells break down faster than your body can replace them. This causes anemia, jaundice, dark urine, and fatigue. The crisis typically begins within hours to days after trigger exposure and may last several days to weeks depending on severity.
Yes, most children with G6PD deficiency can participate in sports and physical activities. Exercise itself does not typically trigger hemolysis. Make sure coaches and school nurses know about the condition and have emergency contact information available.
Yes, always inform your dentist about G6PD deficiency before any procedure. Some local anesthetics and pain medications used in dental work may not be safe. Your dentist can choose appropriate alternatives that will not trigger red blood cell breakdown.
Yes, infections are common triggers for hemolytic crises in people with G6PD deficiency. Bacterial and viral infections increase oxidative stress on red blood cells. Seek prompt medical attention for infections and make sure your doctor knows about your G6PD deficiency when prescribing antibiotics or other treatments.